Therapeutic lamp



P. E. JOHNSON.

THERAPEUHC LAMP.

.QEPLICATION FILED JUNE 9.1920.

Lflggl 19 PatentedJan. ML 1922 wu/ /vmm' PAWL E. Momma/y EAUL E. JOHNSON, OF CHICAGO, ILLINOIS.

THERAPEUTIC LAMP.

Application filed June 9,

To all whom it may concern:

Be it known that I, PAUL E. JoHNsoN, a citizen of the United States. residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Therapeutic Lamps, of which the following is a specification.

My invention relates to therapeutic lamps, and the object of the invention is to provide an apparatus which will render available to the operator rays having a full range of wave lengths. It is well known tothose experienced in the treatment of pathological conditions, congestion and other physical disturbances by the aid of light and heatrays that rays of different wave lengths produce diiferent physiological and therapeutic effects. My purpose is to render it possible for the operator to readily obtain the different wave lengthsor any desired combinations of wave lengths required under any given conditions.

I accomplish my objects by the mechanism illustrated in the accompanying drawing in which--- i Figure 1 is a side elevation, partly in section, of the chief portions of the apparatus as they appear when assembled.

. igure 2 .is a plan section on the line 2-2, Figure 1.

Figure 3 is an elevation partly in section showing the quartz light or burner, the view being taken from'the planeindicated by the line 33,'Figure 1.

Figure4 is a sectional view on the line l-*4, Figure 1; i v

Figure 5 is a fragmentary bottom view of the rod which supports the quartz light.

Like numerals denote like parts through out. the several views.

According to the design selected to illustrate the invention, the lamp proper is sup-' ported from a sleeve 1 which is guided vertically upon a standard 2 by antifriction roll-. ers 3. In order that the sleeve'may move freely and withlittle eflort onvth'e part of the operator, it is desirable to counterbalance-it by means of a weight (not shown) which travels within the standard and is attached to a cord 4 which passes .over a guide pulley 6 at the top of the standard. A set screw 7 is provided for securing the sleeve at any elevation desired.

The sleeve has a cross guide 8 for a rod 10 which supports the reflector housing 12 for the lamps.- The rodmay be moved hori" Specification of Letters Patent.

Patented Jan. Ill), 11.922.

1920. Serial No. 387,623.

zontally in the guide by means of a handle 13 of any suitable type and is prevented from rotating by means of a spline 14 which fits partially within the guide and partially within a groove 15 formed in the bottom of the guide. The lamp housing may thus be adjusted both horizontally and vertically.

The housing has a dome-like portion 16 terminating at the bottom in a cylindrical flange 18. At the top of the dome is a lamp socket 19 for the upper lamp 20. This. is an ordinary screw socket provided with the usual terminals (not shown) and controlled by a switch 22. The lamp terminals are energized through a lamp cord or cable 24 of any suitable type. The lamp 20 is an incandescent electric lamp of desired wattage, usually from 500 to 1000. It emits rays having -t-he longer wave lengths. I

Mounted in the cylindrical flange portion .of the housing is a tubular guide 26 for a rod 27. At the outer end this rod has a handle 28 of any suitable design and. at the inner end carries a bracket 30 which extends at right angles to the rod and forms a support for a mercury vapor quartz lamp 32. The rod is longitudinally slidable in its guide and is normally prevented from rotating about its axis by means of a screw pin 34 mounted in guide 26 and projecting into the slot 36 formed in the under side of the rod, as best shown in Figures 1, 4, and 5. At its outer endthe slot has a transverse bend 38 which permits the rod to rotate slightly for starting the lamp, as will be hereinafter explained. As the slot terminates at this bend it forms, in'cooperati-on with the pin 34, a stop for limiting the inward movement of the rod. The parts are so proportioned that when the rod has been pushed in as far as it will go,

the lamp 32 will be substantially in line with the longitudinal axis of the upper lam 20.

T e quartz lamp or burner" 32, previously mentioned, is an article well known in the electrical industry and need not be described further than to say that it is, in the main, of tubular form, having a pocket40 at one end for containing the mercury 41, except during the starting period. It has two terminals 42energized by flexible conductors 44 lead-- ing from binding posts 46 mounted at a convenient point on the housing, as best shown in Figures 1 and 2. Electric energy is supplied to the conductors 44 by suitable conductors 48; controlled by aswitch 49 m dicated in dotted lines in Figure l. The connections from the binding posts to the switch are not completely shown as they are of ordinary design and the drawing is more readily understood without them. As known by those familiar with these quartz lamps or mercury vapor lamps, such lamps emit rays of shorter wave length frequently known as actinic rays. To start the lamp burning, the current is first turned on, then the lamp is tilted by rotating the rod 27. In this design the tiltingaction can occur only when the rod is pushed in to the limit, with the bend 38 opposite to the pin 34:. The tilting is for the purpose of completing the elec-- trio circuit through the mercury, after which the current is carried through the mercury vapor and the lamp is permitted to tilt back, under the action of gravity. The liquid 1 mercury then recollects in the pocket 40. The lamp is overbalanced for the purposethe rod being located off center, away from the pocket 40.

In practice, when the operator is ready to give a treatmenthe first positions the patient, then adjusts the apparatus vertically by moving the sleeve 1 upon the standard and sliding the rod 10 horizontally to the.

best position. He then decides what characterof emanations he desires. understanding that thelong rays emanating from the upper :lamp 20 give in greaterabundance .heat rays whose chief function is for immediate relief of congestion or pain; and that the short rays emanating from the quartz lamp .32 give in reater abundance actinio rays WhlCl'l are 0 value for destroying germs, -arresting malignant growths, etc. The rays of longer wave length penetrate more deeply while those of-shorter :length, emanating from the upper lamp, af-

feet primarily the surface or portions of tissue near the surface. In some cases, however, it is desirable to employ both kinds of rays simultaneously. apparatus affords opportunity for using the different kinds of rays either one at a time or simultaneously. If both types of'rays arewanted the operator adjusts the parts to the position shown in full lines in Figure 1 and turns on both switches 22 and 49. He thus obtains a combination of rays having wave lengths ranging from the lowest to the highest within the compass of the two lighting units. If

the short rays are wanted alone, the operator turns-off the switch 22 controlling the upper lamp and starts the lower lamp 32. As the lamp giving these rays of shorter wavelength is the lower of the two lamps,

the upper one, naturally, cannot obstruct the rays. If it is desired to employ the rays of longer wave length, the switch 22 is turned on, the switch 49 turned off, and the lower lamp 32retracted to the dotted line position, Figure l, by sliding the rod 27- outward in its bearing 26. Thus there will" be nothing to obstruct the rays emanating It is not necessary to change the poously the slight obstruction offered by the v lower lamp will be quite negligible, es-

v.pecially as it. will be understood that ordinarily' the two lamps will give ofl certain quantities of rays which: are similar or approximately so. By the use'of this ap' paratus the operator may exerclse his judgment and may, without interruption, substitute one type of ray for another at any point in'the treatment, or produce such combination as he may consider desirable. Having thus described my invention,

by Letters Patent is I 1. A herapeutic lamp having a concave reflector with alongitudinal axis, an incandescent lamp mounted within'the housing, with the-filament approximately at the axis thereof, and a mercury vapor lamp adapted to also occu y a position at the axis of the housing, s'ai mer cury vapor lamp bein may be lig ted without 'demo'untin'g it. Q I 2. Apparatus of'the classdescribedhaving a concave reflector provided with an incandescent lamp and a mercury vapor lamp,

what I claim as new'and desire to secure the two lampsbeing adapted to lie ap-. proximately at'the axis of the reflector and the incandescent lamp being located farther within the reflector than the mercury vapor lamp,'.the mercury. vapor lamp being tiltable to enable itto be lighted and also mov able to permit itto be withdrawn from the field .of the incandescent lamp. i

3. In a device of the class described, the combination ofa housing in vthe form of a dome-like reflector, a lamp socket carmoyably" "mou nted zvvhereby I it 'ried in the topofthe reflector, anupper lamp adapted to fit into the socket, a slide rod, a bearing for said slide rod-carriedby the reflector near the mouth thereof and extending radially,- and'a' mercury vapor lamp mounted at the inner end of the rod, said vapor lamp having a mercury tube lying approximately in a plane at right angles to the red, the vrod being rotatable in its bearing for tilting the tube for starting the lam 4. In a (wire of the class described, the

combination of a dome-like reflector, an lid-j candescent lamp, having a filament located approximately at the axis of the reflector, a mercury vapor lamp, a stationary pin,

anda: slide rod carrying the vapor aoauo vapor tube lamp arranged approximately at the axis of the reflector but having its lengthapproximately transverse to the axis of the reflector, the tube lamp being located nearer the mouth of the reflector, and means for supporting the tube lamp movably Without detaching it, said means being adapted to permit the tube lamp to tilt to enable it to be lighted.

In Witness whereof, I have hereunto sub-' scribed my name.

PAUL E. JOHNSON, 

